Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany.
Phys Rev E. 2017 May;95(5-1):051201. doi: 10.1103/PhysRevE.95.051201. Epub 2017 May 8.
Plasma high-order-harmonic generation from an extremely intense short-pulse laser is explored by including the effects of ion motion, electron-ion collisions, and radiation reaction force in the plasma dynamics. The laser radiation pressure induces plasma ion motion through the hole-boring effect, resulting in frequency shifting and widening of the harmonic spectra. The classical radiation reaction force slightly mitigates the frequency broadening caused by the ion motion. Based on the results and physical considerations, parameter maps highlighting the optimum regions for generating a single intense attosecond pulse and coherent XUV radiation are presented.
通过在等离子体动力学中考虑离子运动、电子-离子碰撞和辐射反作用力的影响，研究了超强短脉冲激光的等离子体高阶谐波产生。激光辐射压力通过烧蚀孔效应诱导等离子体离子运动，导致谐波谱的频移和展宽。经典的辐射反作用力略微减轻了离子运动引起的频率展宽。基于这些结果和物理考虑，本文呈现了突出产生单个强阿秒脉冲和相干 XUV 辐射的最优区域的参数图。
